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Instagram videos have stopped displaying for me in Firefox 52 ESR. It happened suddenly a day or two ago.
There isn't even a placeholder there for them on the page any lo… (read more)

Instagram videos have stopped displaying for me in Firefox 52 ESR. It happened suddenly a day or two ago.
There isn't even a placeholder there for them on the page any longer, just the text that goes with them with nothing where the video should be.
If I try to view one from someone's IG page, it just shows as a black box.
Static images are still displaying fine, just not the videos.

This is on my old Windows XP machine, where I have to use FF 52.9.0 ESR as it's the last XP compatible version.
The videos are fine in FF65 on my Windows 10 machine needless to say.
I've tried spoofing different user agent strings, but no difference.

The strange thing is that on Google Chrome 49, again the last version which works on XP, the videos still display fine, and that is much older than FF 52 ESR!
Also, if I right click on the IG page in FF 52 ESR, and select the "View Page Info" option, the videos still appear in the list on the "Media" tab, and if selected, they still display and can be played in the preview pane below, so they're obviously not being actually blocked, and the browser can still play them, they are just not displaying inline in the pages as they should!

Anyone any idea what's happening here?
There's no point in me asking Instagram, as I know they will just say that they no longer support Firefox 52 ESR!
Thanks, Dave.